内蒙古测老庙盆地铀矿床形成的古水文地质研究

STUDY ON THE PALEOHYDROGEOLOGY OF URANIUM DEPOSITT IIN CELAOMAO BASIN OF INNER MONGOLIA

测老庙盆地为早元古代褶皱基底上发育起来的中生代断陷盆地，其发展过程经历了四个古水文地质期，并形成了两大水文地质区、三类水文地质亚区。本文恢复了古含水层空间分布特征，计算了古含水层初始水交替强度，认为区内铀矿形成于古含水层中沉积压榨水与渗入水混合作用带的有利部位。

Celaomiao basin was the fault basin of Mesozoic Era formed in the fold base of early Pro-terozoic era. It went through four paleohydrogeological periods and formed two hydrogeological re-gions,three hydrogeological subregions.The paper recoveried the space distribution features of ancient aquifer,and calculated the first degree of water exchange in ancient aquifer,and concluded lastly that the uranium deposit within the area was formed in the advantageous site in interaction area of sedimen-tary water and infiltration water.